Parts/Engines & fuel/Engine accessories/O.S. Crankshaft Clamp Piston Locking Tool (.32, .46 and .50 Engines)
O.S. Crankshaft Clamp Piston Locking Tool (.32, .46 and .50 Engines)
O.S.

O.S. Crankshaft Clamp Piston Locking Tool (.32, .46 and .50 Engines)

Part # OSM71530400
Where to buy
$21.99
AMain Hobbies
Seen Oct 12, 2026
$21.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

This is a Crankshaft Clamp (Locking Tool) from O.S. Engines. This will work with any .32, .46 and .50 size engine. This device facilitates the installation, or removal, of a flywheel, cooling fan or pilot shaft by temporaily locking the crankshaft so that it cannot rotate. Made of durable plastic, it locks the crankshaft without risk of damage to any part of the engine and can also be used with recoil-starter equipped engines.

How to use: Remove the crankcase rear coverplate from the engine and rotate the crankshaft to the bottom-dead-center position. Insert the crankshaft clamp so that its grooved portion surrounds the crankpin and lower end of the connecting-rod and securely tighten the flywheel, fan or pilot shaft onto the crankshaft. Remove crankshaft clamp when completed and re-install the coverplate back onto the engine.

Reviews

No reviews yet.

Builds using this part

No builds use this part yet — add it to yours from the build editor.